BACKGROUND The World Health Organisation recommends the use of catch-up campaigns as part of the introduction of pneumococcal conjugate vaccines (PCVs) to accelerate herd protection and hence PCV impact. The value of a catch-up campaign is a trade-off between the costs of vaccinating additional age groups and the benefit of additional direct and indirect protection. There is a paucity of observ...

Longline and purse seine logsheet and observer datasets held by SPC-OFP were examined to assess the stock status of eight WCPFC key shark species. Both longline and purse seine logsheet datasets suffer from missing shark catch records and a lack of species-specific recording, therefore the indicator analysis was based on observer data only. Shark data from the observer data sets are, however, a...

Effectiveness in controlling mosquito larvae in stormwater catch basins in the North Shore Mosquito Abatement District (northeastern Cook County, IL) was determined for 2 extended-duration larvicides indicating up to 180 days of control on their labels (Natular™ XRT, FourStar® Briquet) and 3 larvicides indicating up to 30 days of control (Natular™ T30, Natular™ G30, and VectoLex® FG). Over the ...

Fishing takes place in the high seas and Exclusive Economic Zones (EEZs) of maritime countries. Closing the former to fishing has recently been proposed in the literature and is currently an issue of debate in various international fora. We determine the degree of overlap between fish caught in these two areas of the ocean, examine how global catch might change if catches of straddling species ...

OBJECTIVES Case study investigations of projects identified with the Community Access to Child Health (CATCH) Program were conducted to illustrate the range of achievements of CATCH and to identify those elements related to successful or unsuccessful implementation. METHODS We developed a purposive sample of 12 projects, selected based on time of initiation (1989-1995), level of intensity of ...

A two countries-single speriss dynamic optimizacion problem in fisheries is formulated in differential game theoretic framework. The Cournot-Nash solution concept is introduced and two strategies in arriving at the Cournot-Nash solutions; are discussed. These strategies are (1) closed-loop catch strategy and (2) openloop catch strategy. A quadratic benefit function is then used as the objective...

Moderate alkalisation is known to terminate the catch state of bivalve mollusc smooth muscles such as the anterior byssus retractor muscle (ABRM) of Mytilus edulis L. In the present study, we investigated the effect of moderate alkalisation (pH 7.2-7.7 vs control pH 6.7) on the myosin head detachment rate in saponin-skinned fibre bundles of ABRM in order to investigate the possible role of myos...